It starts with our girl, Judy Lee, arrives in town to start up a martial arts school. She is watching street performers when the extortion gang shakes them down. She fights them. In a few more loosely linked scenes she helps others similarly.
My copy is English dubbed. In the opening 20 minutes or so the story line seems to be messed up with continuity problems. For one, she supposedly went to work in a brothel and beat up people there. None of that was shown. It's also possible the dialog is messed up instead or even a little of both. None of that matters though. The Japanese eventually enter the picture. Anyone familiar with these movies knows whenever the Japanese appear they become the one dimensional bad guys in the movie.
Charles Heung Wah-Keung appeared in many martial arts movies during the golden age from 1967 to 1984. Some were good and some were stinkers. I consider his high point 1978 "Goose Boxer". He went on to be a big name producer of Win's Entertainment and China Star Entertainment Group.
Chia Ling, or Judy Lee, or other names, was one of the biggest female martial arts movie stars in the early 1970s. This movie is far from her finest moment. I think even hard core fans of the genre could pass on this one. I watched it once to say I watched all of her movies. I wrote my review and I am done.